Paleontology

Download Primate Adaptation and Evolution by John G. Fleagle PDF

By John G. Fleagle

Primate model and Evolutionis the single contemporary textual content released during this swiftly progressing box. It will give you an intensive, present survey of the order Primates, either residing and fossil. by means of combining info on primate anatomy, ecology, and behaviour with the primate fossil list, this e-book permits scholars to check primates from all epochs as a unmarried, manageable staff. It surveys significant primate radiations all through sixty five million years, and offers equivalent therapy of either residing and extinct species.

ï offers a precis of the primate fossils
ï studies primate evolution
ï offers an advent to the primate anatomy
ï Discusses the beneficial properties that distinguish the dwelling teams of primates
ï Summarizes fresh paintings on primate ecology

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Extra info for Primate Adaptation and Evolution

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Note the reduction in n u m b e r and relative size o f the turbinates in Tarsius and Saimiri. M, maxilloturbinate; N , nasoturbinate; E, ethmoturbinates (numbered). 2 24 T H E PRIMATE B O D Y Raccoon Gibbon FIGURE 2 . 1 3 T h e bony structure of the orbit in a raccoon, a lemur, and a gibbon. In the raccoon skull, the orbit is open laterally. In the lemur, the eye is surrounded by a bony ring which is o p e n poste­ riorly. In the gibbon, the posterior o p e n i n g of the orbit is closed off so that the eye is surrounded by a bony cup.

T h e r e is considerable variation a m o n g pri­ mate species in t h e relative size of the fallopian tubes a n d t h e b o d y of t h e u t e r u s . A m o n g l e m u r s a n d lorises, t h e fallopian tubes are large relative to t h e b o d y of t h e uterus, a condition n o r m a l l y f o u n d a m o n g m a m m a l s t h a t have multiple b i r t h s . A m o n g tarsiers, monkeys, a p e s , a n d h u m a n s , t h e fallopian tubes a r e relatively slender a n d the body of t h e u t e r u s is m u c h larger, t h e condidon normally f o u n d a m o n g m a m m a l s that give birth to single offspring.

All of the cranial nerves, which a r e responsi­ ble for innervation of such t h i n g s as t h e organs of sight, smell, a n d h e a r i n g a n d t h e orbital muscles, arise from t h e b r a i n s t e m . Very little of t h e p r i m a t e b r a i n s t e m is visible in either a lateral o r s u p e r i o r view; it is covered by two areas t h a t have b e c o m e so large a n d specialized t h a t they a r e recog­ nized as s e p a r a t e p a r t s — t h e c e r e b e l l u m a n d the cerebral h e m i s p h e r e s .

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